Q. No.
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To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
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In case of incomplete dominance, the F1 progeny of a monohybrid cross resembles:
| 1. | Either of the parents | 2. | The male parent |
| 3. | Neither of the parents | 4. | Both parents |
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What is applicable to both Klinefelter’s syndrome and Turner’s syndrome?
| I. | They result from the non-disjunction of sex chromosomes during gamete formation |
| II. | They can be identified by a karyotype |
| III. | They have 44 autosomes |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
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An exchange of segments between non-homologous chromosomes is called as:
1. Crossing over
2. Inversion
3. Reciprocal translocation
4. Transposing
If a father and son are both affected by red-green colour blindness, then what can be said definitely?
| I. | The son has received the trait from the father. |
| II. | The mother of the affected son has to be affected by red-green colour blindness. |
| III. | Any sister of the affected son can never be affected by red-green colour blindness. |
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | None |
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If individuals of genotype AaBbCc are intercrossed, how many different phenotypes can appear in their offspring?
| 1. | 3 | 2. | 6 |
| 3. | 8 | 4. | 9 |
A man of which of the following blood groups could not be the father of a group O child?
1. A
2. B
3. O
4. AB
Two garden pea dihybrids with round seed shapes and yellow seed color [RrYy] are intercrossed. Assuming independent assortment, the gene for seed shape is inherited by the progeny in a phenotypic ratio of:
| 1. | 3: 1 | 2. | 1: 1 |
| 3. | 9:3:3:1 | 4. | 1:1:1:1 |
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The gene for the enzyme Phenylalanine hydroxylase is located on chromosome:
1. 7
2. 11
3. 12
4. X
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